首页 \ 问答 \ 函数需要多少个参数?(How many arguments does a function take?)

函数需要多少个参数?(How many arguments does a function take?)

我怎样才能得到一些函数参数的lambda列表规范,或者至少需要一些参数?

例如:

(defun a (a b) )
(get-arg-list #'a) ;-> '(a b)

How can i get a lambda list specification of a some function parameters, or at least a number of arguments it takes?

For example:

(defun a (a b) )
(get-arg-list #'a) ;-> '(a b)

原文:https://stackoverflow.com/questions/11174917
更新时间:2022-02-24 14:02

最满意答案

我意识到我的AppCtrl调用$ window.sessionStorage.getItem('name')是未定义的。

所以我修改它:

angular.module('app')
.controller('AppCtrl', ['$http', '$scope', '$window', 'APIROOT', AppCtrl]);

function AppCtrl($http, $scope, $window, APIROOT) {
    var date = new Date();
    var year = date.getFullYear();
    if ($window.sessionStorage.getItem('name')) {
    var name = $window.sessionStorage.getItem('name');
     } else {
        var name = "";
     }
    $scope.main = {
       name: name
       brand: 'Brand',
       year: year
    };
}

I realize my AppCtrl call $window.sessionStorage.getItem('name') which is undefined.

So i modify it:

angular.module('app')
.controller('AppCtrl', ['$http', '$scope', '$window', 'APIROOT', AppCtrl]);

function AppCtrl($http, $scope, $window, APIROOT) {
    var date = new Date();
    var year = date.getFullYear();
    if ($window.sessionStorage.getItem('name')) {
    var name = $window.sessionStorage.getItem('name');
     } else {
        var name = "";
     }
    $scope.main = {
       name: name
       brand: 'Brand',
       year: year
    };
}

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